testing adjusting hydraulic 330c

8/13/2019 Testing Adjusting Hydraulic 330C

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RENR5435 - 330C Excavator Hydraulic System - 01/10/2004TESTING AND ADJUSTING(CYA,HAA, MCA, JAB, KDD, GAG, RBH, BTM, GKX, DKY)General Testing and Adjusting Information 01/10/2004Visual Inspection 01/10/2004Hydraulic System Pressure - Release 01/10/2004

Release Of Hydraulic Pressure From A Single Hydraulic Circuit 01/10/2004Release Of Hydraulic Pressure From Multiple Hydraulic Circuits 01/10/2004Main Hydraulic Pump Air - Purge 01/10/2004Operational Checks 01/10/2004Engine Performance - Test - Engine Speed 01/10/2004Travel on Level Ground - Test 01/10/2004Travel on Level Ground - Test - Optional Test 01/10/2004Machine Drift on a Slope - Check 01/10/2004Swing Speed and Overswing on Level Ground - Check 01/10/2004Swing Speed and Swing Drift on a Slope - Check 01/10/2004Cylinder Drift - Check - Loaded Bucket 01/10/2004Cylinder Drift - Check - Empty Bucket 01/10/2004Cylinder Speed - Check 01/10/2004

Relief Valve (Pilot) - Test and Adjust 01/10/2004Accumulator (Pilot) - Test and Charge 01/10/2004Testing and Charging the Pilot System Accumulators 01/10/2004Relief Valve (Main) - Test and Adjust 01/10/2004Temporary Setting of the Main Relief Valve 01/10/2004Relief Valve (Line) - Test and Adjust 01/10/2004Test 01/10/2004

Adjustment (Boom Cylinders) 01/10/2004Adjustment (Stick Cylinder) 01/10/2004Adjustment (Bucket Cylinder) 01/10/2004Swing Motor - Test - Measurement of Case Drain Oil 01/10/2004Relief Valve (Swing) - Test and Adjust 01/10/2004Swing Bearing Movement - Measure 01/10/2004Procedure To Measure Vertical Movement Of The Swing Bearing 01/10/2004Procedure To Measure Circular Movement Of The Swing Bearing 01/10/2004Fan Motor (Hydraulic Oil Cooler) - Test - Measurement of Case Drain Oil 01/10/2004Fan Motor Speed (Hydraulic Oil Cooler) - Test and Adjust 01/10/2004Test 01/10/2004

Adjust 01/10/2004Travel Motor - Test - Measurement of Case Drain Oil 01/10/2004Relief Valve (Crossover) - Test and Adjust 01/10/2004Main Pump (Flow) - Test - Constant Horsepower Flow Control 01/10/2004Drive Pump 01/10/2004Idler Pump 01/10/2004Test 01/10/2004Pump Control (Output Flow) - Adjust 01/10/2004

Adjustment Of Output Flow Under Total Horsepower Control 01/10/2004

Adjustment of the Maximum Output Flow of the Pump 01/10/2004Pump Control (Negative Flow) - Test 01/10/2004Drive Pump 01/10/2004Idler Pump 01/10/2004Test 01/10/2004Pump Control (Negative Flow) - Adjust 01/10/2004Gear Pump (Pilot) - Test 01/10/2004Specifications 01/10/2004


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Pruebas y Ajustes330C Excavator Hydraulic System

General Testing and Adjusting Information

SMCS -5050

The correct oil temperature, flow, and pressure are necessary for correct operation. Pump output (oilflow) is a function of engine speed (rpm) and valve adjustment. Oil pressure is caused by resistanceto the flow of oil.

Visual checks and measurements are the first steps during troubleshooting. Refer to Testing AndAdjusting, "Visual Inspection". Next, perform the operational checks. Refer to Testing AndAdjusting, "Operational Checks". Finally, perform the required tests and adjustments on themachine.

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Producto: NO SE HA ESCOGIDO NINGUN EQUIPOModelo: NO SE HA ESCOGIDO NINGUN EQUIPO

Configuracin: NO SE HA ESCOGIDO NINGUN EQUIPO

Nmero de medio -RENR5435-03 Fecha de publicacin -01/10/2004 Fecha de actualizacin -29/10/2004

i01390735

Hydraulic oil pressure can remain in the hydraulic systems after theengine and pump have been stopped. Serious injury can be caused ifthis pressure is not released before any service is done on the hydraulicsystems. To prevent possible injury, refer to the section, Testing andAdjusting, "Hydraulic System Pressure - Release" before any fitting,hose or component is loosened, tightened, removed or adjusted.

When possible, the work tool must always be lowered to the groundbefore service is started. When it is necessary for the boom to be in theraised position while tests or adjustments are done, be sure that theboom, stick and work tool have correct support.

The swing lock (if equipped) must be engaged before service is started.

Always move the machine to a location away from the travel of othermachines. Be sure that other personnel are not near the machine whenthe engine is running and tests or adjustments are being made.

Copyright 1993 - 2006 Caterpillar Inc.Todos los derechos reservados.Red privada para licenciados del SIS.

Wed Jul 26 09:18:48 EST 2006


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Visual Inspection

SMCS -5050-040

A visual inspection of the system is the first step in order to troubleshoot a problem. Shut off theengine and lower all implements to the ground before performing the visual inspection.

1. Check the oil level in the hydraulic tank. Slowly loosen the fill/vent plug and release thepressure before the fill/vent plug is removed.

2. Remove the hydraulic filter elements. Inspect the hydraulic filters for material that would givean indication of damage to a component.

3. Inspect all lines and connections for damage or leaks.

4. Inspect control linkages for bent components, broken components or damaged components.

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NOTICE

Care must be taken to ensure that fluids are contained during

performance of inspection, maintenance, testing, adjusting and repairof the product. Be prepared to collect the fluid with suitable containersbefore opening any compartment or disassembling any componentcontaining fluids.

Refer to Special Publication, NENG2500, "Caterpillar Tools and ShopProducts Guide" for tools and supplies suitable to collect and containfluids on Caterpillar products.

Dispose of all fluids according to local regulations and mandates.

Copyright 1993 - 2006 Caterpillar Inc.

Todos los derechos reservados.Red privada para licenciados del SIS.

Wed Jul 26 09:22:19 EST 2006


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Hydraulic System Pressure - Release

SMCS -4250-553-PX ; 5050-553-PX

The release of hydraulic pressure in a hydraulic circuit is required before service is performed to thathydraulic circuit. Release the pressure in the following hydraulic circuits before any hydraulic linesare disconnected or removed from that hydraulic circuit.

Boom hydraulic circuit

Stick hydraulic circuit

Bucket hydraulic circuit

Swing hydraulic circuit

Travel hydraulic circuit

Attachment hydraulic circuits (if equipped)

Pilot hydraulic circuit

Return hydraulic circuit

Note: Refer to the Disassembly and Assembly Manual for additional information concerning serviceof the components of specific hydraulic circuits.

Release Of Hydraulic Pressure From A Single HydraulicCircuit

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Personal injury can result from hydraulic oil pressure and hot oil.

Hydraulic oil pressure can remain in the hydraulic system after theengine has been stopped. Serious injury can be caused if this pressure isnot released before any service is done on the hydraulic system.


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Perform the following Steps in order to release the hydraulic pressure from a single hydraulic circuitof the main hydraulic system.

1. Position the machine on level ground.

2. Fully retract the stick cylinder rod. Adjust the position of the bucket so that the bucket isparallel to the ground. Lower the boom until the bucket is flat on the ground. Refer toIllustration 1.

Make sure all of the attachments have been lowered to the ground, andthe oil is cool before removing any components or lines. Remove the oilfiller cap only when the engine is stopped, and the filler cap is coolenough to touch with your bare hand.

NOTICE

Care must be taken to ensure that fluids are contained duringperformance of inspection, maintenance, testing, adjusting and repairof the product. Be prepared to collect the fluid with suitable containersbefore opening any compartment or disassembling any componentcontaining fluids.

Refer to Special Publication, NENG2500, "Caterpillar Tools and ShopProducts Guide" for tools and supplies suitable to collect and contain

fluids on Caterpillar products.


Illustration 1 g00666865


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3. Shut off the engine.

4. Turn the engine start switch to the ON position without starting the engine.

5. Place the hydraulic activation control lever in the UNLOCKED position.

6. Move only the joysticks or the pedals of the hydraulic circuit that requires service to the FULLSTROKE positions. This will release the high pressure only in that single hydraulic circuit.This will also release any pressure that might be present in the pilot hydraulic circuit.

Note: If the desired hydraulic circuit that requires service requires the activation of a switchfor operation, activate the necessary switches for the operation of the hydraulic circuit.

7. Place the hydraulic activation control lever in the LOCKED position.

8. Turn the engine start switch to the OFF position.

9. Slowly loosen the filler plug on the hydraulic tank and release the pressure from the hydraulictank. Leave the filler plug loose for a minimum of 45 seconds. This will release the pressurethat may be present in the return hydraulic circuit.

10. Tighten the filler plug on the hydraulic tank to the specified torque.

11. The pressure in the single hydraulic circuit that requires service is now released and lines andcomponents can be disconnected or removed from that hydraulic circuit.

Release Of Hydraulic Pressure From Multiple Hydraulic

Circuits



Make sure all of the attachments have been lowered to the ground, andthe oil is cool before removing any components or lines. Remove the oilfiller cap only when the engine is stopped, and the filler cap is coolenough to touch with your bare hand.

NOTICE




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Perform the following Steps in order to release the hydraulic pressure from multiple hydrauliccircuits of the main hydraulic system.


2. Fully retract the stick cylinder rod. Adjust the position of the bucket so that the bucket isparallel to the ground. Lower the boom until the bucket is flat on the ground. Refer toIllustration 2.


4. Turn the engine start switch to the ON position without starting the engine.

5. Place the hydraulic activation control lever in the UNLOCKED position.

6. Move only the joysticks or the pedals of the hydraulic circuit that requires service to the FULLSTROKE positions. This will release the high pressure only in that hydraulic circuit. This willalso release any pressure that might be present in the pilot hydraulic circuit.

Note: If the hydraulic circuit that requires service requires the activation of a switch foroperation, activate the necessary switches for the operation of the hydraulic circuit.

7. Place the hydraulic activation control lever in the LOCKED position.





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8. Start the engine.

9. Place the hydraulic activation control lever in the UNLOCKED position. Do not move anyjoysticks or pedals from the NEUTRAL position during this step. Do not activate anyswitches during this Step.

10. Return the hydraulic activation control lever to the LOCKED position.


12. Repeat Steps 4 through 11 for each additional hydraulic circuit that requires service.

13. After releasing the hydraulic pressure in each of the desired hydraulic circuits, place thehydraulic activation control lever in the LOCKED position.

14. Turn the engine start switch to the OFF position.

15. Slowly loosen the filler plug on the hydraulic tank and release the pressure. Leave the fillerplug loose for a minimum of 45 seconds. This will release the pressure that may be present inthe return hydraulic circuit.

16. Tighten the filler plug on the hydraulic tank to the specified torque.

17. The pressure in the multiple hydraulic circuits that require service is now released and linesand components can be disconnected or removed from those hydraulic circuits.


Wed Jul 26 09:58:10 EST 2006


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Main Hydraulic Pump Air - Purge

SMCS -5070-542-AI

When the main pumps have been serviced or the hydraulic oil has been replaced, remove the airfrom the hydraulic system. Remove the air from the hydraulic system in the following manner:

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NOTICE

Care must be taken to ensure that fluids are contained duringperformance of inspection, maintenance, testing, adjusting and repairof the product. Be prepared to collect the fluid with suitable containersbefore opening any compartment or disassembling any component

containing fluids.





Make sure all of the work tools have been lowered to the ground, andthe oil is cool before removing any components or lines. Remove the oilfiller cap only when the engine is stopped, and the filler cap is coolenough to touch with your bare hand.


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1. While the engine is stopped, disconnect hose (3) from connector (1) .

2. Remove connector (1) and O-Ring seal (2) from the pump housing.

3. Fill the main pumps with oil.

4. Install new O-Ring seal (2) and connector (1) at the pump housing.

5. Connect hose (3) to connector (1). Tighten hose (3) to the specified torque.


7. Place the engine at low idle position. Raise the boom and hold the boom in this position.

8. Slowly loosen hose (4) until oil begins to flow around the hose connection.

9. Tighten hose (4) to the specified torque.

10. Stop the engine and slowly lower the boom until the bucket is on the ground. This pressurizesthe hydraulic tank.


Pump compartment

(1) Connector

(2) O-Ring seal

(3) Case drain hose

(4) Negative flow control hose

NOTICE

To avoid system damage, make sure that the hydraulic pump is

properly filled with hydraulic oil before start-up.


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11. Slowly loosen air vent plug (5) until oil begins to flow from the opening.

12. Tighten the air vent plug to the specified torque.


(5) Air Vent Plug


Wed Jul 26 10:03:21 EST 2006


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Operational Checks

SMCS -5050-535

The operational checks can be used to find leakage in the system and components that are notfunctioning correctly. The speed of rod movement or the torque on a motor can be used to check thecondition of the cylinders, motors and the pumps.

Perform the following operational checks in order to troubleshoot problems concerning the hydrauliccircuits and components on the machine.

Testing and Adjusting, "Engine Performance - Test"

Testing and Adjusting, "Travel on Level Ground - Test"

Testing and Adjusting, "Travel on Level Ground - Test (Optional Test)"

Testing and Adjusting, "Machine Drift on a Slope - Check"

Testing and Adjusting, "Swing Speed and Overswing on Level Ground - Check"

Testing and Adjusting, "Swing Speed and Swing Drift on a Slope - Check"

Testing and Adjusting, "Cylinder Drift - Check (Empty Bucket)"

Testing and Adjusting, "Cylinder Drift - Check (Loaded Bucket)"

Testing and Adjusting, "Cylinder Speed - Check"

The specifications that are listed in tables for the operational checks are calculated average values.The values will vary due to the configuration of the machine and engine speed. Table 1 and Table 2contain the machine configurations that were used in order to obtain these specifications.

Reference: Refer to Testing and Adjusting, "Engine Performance - Test" for the specifications forengine speed.

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Table 1


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330C Machine Configuration

Boom Stick Bucket

6.5 m (21 feet 4 inches)3.2 m (10 feet 6 inches) 1.4 m3(1.83 yd3)

Table 2

330C L Machine Configuration

Boom Stick Bucket

6.5 m (21 feet 4 inches) 3.2 m (10 feet 6 inches) 1.5 m3(1.96 yd3)


Wed Jul 26 10:04:48 EST 2006


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Engine Performance - Test - Engine Speed

SMCS -1000-081


2. Stop the engine.

3. Install 9U-7400Multitach Tool Group on the engine.


5. Increase the hydraulic oil temperature to 55 5C (131 9F).

6. Read the engine speed display (rpm) on the multitach. Refer to Table 2 for the specificationsfor engine speed at the desired engine operation.

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Table 1

Required Tools

Part Number Description Qty

9U-7400 Multitach Tool Group 1

Table 2

ItemSpecifications

New Rebuild

No load high idle (1)1880 50 rpm (2)

1980 50 rpm (3)

No load low idle 800 50 rpm

Maximum speed with load (4) 1720 rpm (5) 1670 rpm (5)


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Note: A New specification is the performance that can be expected for a new machine. A Rebuildspecification is the performance that can be expected after rebuilding the components of a system.Performance beyond the Service Limit is an indication of these problems: improper maintenance oradjustment, component wear and failure.

No load speed (6) 1300 50 rpm

( 1 ) AEC switch in the OFF position

( 2 ) Three seconds after the engine speed dial was placed at position "10"

( 3 ) Engine rpm within three seconds after the engine speed dial was placed at position "10"

( 4 ) Pressure is relieved from both pumps (stall condition).

( 5 ) Minimum rpm

( 6 ) AEC switch in the ON position


Wed Jul 26 10:05:47 EST 2006


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Travel on Level Ground - Test

SMCS -4351-081

Note: The engine speed and/or the machine configuration that is used during this test can affect theresults of this test. Refer to Testing and Adjusting, "Engine Performance - Test" for the engine speedthat was used for this test. Refer to Testing and Adjusting, "Operational Checks" for the machineconfigurations that were used for this test.

Note: The relief valve pressure settings must be set to the relief valve pressure specification beforeperforming this operational check. Refer to Testing and Adjusting, "Specifications".

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i01751965

Table 1

Required Tools


5P-3277 Measuring Tape 1

Stopwatch 1


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1. Travel distance must be at least 25 m (82 ft) long. Travel test ground must be hard and as levelas possible.

2. Draw a 25 m (82 ft) straight line on travel test ground as a reference line.


4. Place the machine controls at the following settings: Engine speed dial "10" and AEC switchOFF.


6. The bucket should be empty.

7. Position the machine so that one track is parallel with the reference line. Position the machinefor the travel test. Refer to Illustration 1.

8. Place the travel speed control switch in HIGH position.

9. Move the machine by operating both travel levers at the same time.

10. The first 5 m (16.4 ft) are for a preliminary run. Measure the travel time that is required totravel the remaining 20 m (65.6 ft). Measure the time that is required in each direction.

11. Measure the travel deviation from the reference line.

12. Place the travel speed control switch on the LOW position and repeat Steps 9 through 11.


(A) Preliminary run 5 m (16.4 ft)

(B) Travel distance 20 m (65.6 ft)

(C) Bucket height 0.5 to 1 m (1.6 to 3.3 ft)


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Note: The following table represents the travel deviation (distance) from the reference line.

Table 2

Travel Time (time in seconds)

Travel Speed New Rebuild

HIGHForward

15.2 or less 16.2 or lessReverse

LOWForward


Table 3

Travel Deviationmm (inch)


HIGHForward

800 (31.5) or less 1200 (47.2) or lessReverse

LOWForward

800 (31.5) or less 1200 (47.2) or lessReverse


Wed Jul 26 10:08:33 EST 2006


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Travel on Level Ground - Test - Optional Test

SMCS -4351-081

Note: When the procedure for the Travel On Level Ground cannot be performed, this test may beused as a substitute.



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Table 1

Required Tools


Stopwatch 1


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LOWForward


Table 3

330C L Time For Three Revolutions (time in seconds)


HIGHForward


LOWForward



Wed Jul 26 10:15:26 EST 2006


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Machine Drift on a Slope - Check

SMCS -4095-535

Measuring the amount of drift of the machine on a slope will determine if there is a need to check thetravel brake.



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Table 1

Required Tools


Stopwatch 1

Scale150 mm (6 inch)

1


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1. Place the machine on a slope of 12 degrees. The surface of the slope must be hard and smooth.

2. Position the implements, as shown. Refer to Illustration 1.


4. To indicate the machine's relative position to the slope, put a mark on both the track and thetrack roller frame. Refer to Illustration 2.




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5. Stop the engine.

6. Measure the machine movement on the slope after three minutes.

Table 2

Drift mm (inch)

New Rebuild

0 0


Wed Jul 26 10:16:34 EST 2006


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Swing Speed and Overswing on Level Ground - Check

SMCS -5058-535-ZW

Measuring the swing speed and the overswing of the machine will determine if there is a need tocheck the swing motor or the anti-reaction valve. The fine swing control switch (if equipped) must

be in the OFF position.


Note: The relief valve pressure settings must be set to the relief valve pressure specification before

performing this operational check. Refer to Testing and Adjusting, "Specifications".

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Table 1

Required Tools



Stopwatch 1


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1. Position the machine on level ground. Refer to Illustration 1.

2. Stop the engine.



(A) Upper frame

(B) Undercarriage frame

(C) Marking


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3. To indicate the relationship of the two positions, put a mark (C) on the inner race and the outerrace of the swing bearing. The mark will be used as a target to stop the swing operation. Referto Illustration 2.


5. Move the swing joystick in either direction until the machine completes a 180 degree swingoperation away from the target.

6. Move the swing joystick in either direction until the machine completes a 180 degree swingoperation toward the target. Return the swing joystick to the NEUTRAL position at the target.

7. Measure the amount of overswing by measuring the distance between the marks on the swingbearing. Refer to Illustration 2.

Note: Use a point that is visible from the operator seat as a reference point for the target.

8. Move the swing joystick in each direction and measure the time that is required to complete a

180 degree swing operation.

Table 2

Overswing

Item New Rebuild

Right Swing

1300 mm (51.2 inch) or less 1400 mm (55.1 inch) or lessLeft Swing

Table 3

Swing Time (seconds)

Item New Rebuild

Right Swing4.9 or less 5.4 or less

Left Swing


Wed Jul 26 10:22:40 EST 2006


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Swing Speed and Swing Drift on a Slope - Check

SMCS -5058-535-ZW

Measuring the swing speed on a slope will determine if there is a need to check the swing motor andthe anti-reaction valve. Measuring the swing drift on a slope will determine if there is a need tocheck the swing parking brake.


Note: The relief valve pressure settings must be set to the relief valve pressure specification before

performing this operational check. Refer to Testing and Adjusting, "Specifications".

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Table 1

Required Tools



Stopwatch 1


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1. Complete the following steps in order to measure the swing speed on a slope.

a. The bucket should be empty.

b. Position the machine on a slope of 12 degrees. Refer to Illustration 1.

c. Position the implements at maximum reach and close the bucket. Position the bucket

above the ground so that the bucket will not come in contact with any obstacles.

d. Position the upper structure at position (A). The upper structure should be at a 90 degree




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angle to the lower structure. Refer to Illustration 2.

e. Measure the time that is required to swing the upper structure from position (A) toposition (B) .

f. Position the upper structure at position (C). The upper structure should be at a 90 degree

angle to the lower structure.

g. Measure the time that is required to swing the upper structure from position (C) toposition (B).

2. Complete the following steps in order to measure the swing drift on a slope.

a. Position the upper structure at position (A). The upper structure should be at a 90 degreeangle to the lower structure. Refer to Illustration 3.

Table 2

Swing Time (seconds)

Item New Rebuild

Right Swing5.5 or less 6.3 or less

Left Swing



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b. To indicate the relationship of the two positions, put a mark (C) on the inner race andthe outer race of the swing bearing. Refer to Illustration 4.

c. Stop the engine.

d. Leave the machine in this position for three minutes. Measure the swing drift on thecircumference of the swing bearing.

e. Start the engine.

f. Position the upper structure at position (C). The upper structure should be at a 90 degreeangle to the lower structure. Refer to Illustration 3.

g. Repeat Steps 2.b through 2.d.


(A) Upper frame

(B) Undercarriage frame

(C) Marking

Table 3

Swing Drift mm (inch)

Item New Rebuild

Right Swing0 0

Left Swing


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Wed Jul 26 10:23:33 EST 2006


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Cylinder Drift - Check - Loaded Bucket

SMCS -7562-535-D9



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Table 1

Required Tools



Stopwatch 1


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2. Load the bucket.

Weight of bucket load330C ... 2520 kg (5555 lb)330C L ... 2700 kg (5950 lb)

3. Raise the boom until the top stick pin is the same height as the boom foot pin.

4. Fully extend the bucket cylinder.

5. Fully retract the stick cylinder.

6. Extend the stick cylinder rod 70 mm (2.8 inch) from the fully retracted position.

7. Measure each cylinder's length from cylinder pin to cylinder pin.

8. Stop the engine.

9. Leave the machine in this position for three minutes. Measure each cylinder's length fromcylinder pin to cylinder pin for drift.


Table 2

Cylinder Drift (Loaded Bucket)

New Boom Cylinder New Stick Cylinder New Bucket Cylinder

6.0 mm (0.24 inch) or less 12.0 mm (0.47 inch) or less 18.0 mm (0.71 inch) or less


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Wed Jul 26 10:24:47 EST 2006


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Cylinder Drift - Check - Empty Bucket

SMCS -7562-535-D9



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Table 1

Required Tools



Stopwatch 1


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2. Empty the bucket.

3. Raise the boom until the top stick pin is the same height as the boom foot pin.

4. Fully extend the bucket cylinder.

5. Fully retract the stick cylinder.

6. Extend the stick cylinder rod 70 mm (2.8 inch) from the fully retracted position.

7. Measure each cylinder's length from cylinder pin to cylinder pin.

8. Stop the engine.

9. Leave the machine in this position for five minutes. Measure each cylinder's length fromcylinder pin to cylinder pin for drift.


Table 2

Cylinder Drift (Empty Bucket)

Item New Rebuild

Boom Cylinder6.0 mm (0.24 inch) or less 12.0 mm (0.47 inch) or less

Stick Cylinder

10.0 mm ( 0.39 inch) or less 15.0 mm ( 0.59 inch) or less

Bucket Cylinder


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10.0 mm ( 0.39 inch) or less 15.0 mm ( 0.59 inch) or less

Copyright 1993 - 2006 Caterpillar Inc.Todos los derechos reservados.

Red privada para licenciados del SIS.

Wed Jul 26 10:25:34 EST 2006


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Cylinder Speed - Check

SMCS -5456-535-VF ; 5458-535-VF



1. Perform the following steps in order to test the operating speed of the boom cylinders.

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(A) Extension test

(B) Retraction test


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a. Place the machine on level ground.

b. The bucket should be empty.

c. Fully retract the bucket cylinder and the stick cylinder.

d. Position the bucket on the ground. With a stopwatch, measure the time that is requiredto fully extend the boom cylinders.

e. Position the boom cylinders at full extension. With a stopwatch, measure the time that isrequired for the bucket to come in contact with the ground.

f. Refer to the specifications in Table 1 for the operating speed of the boom cylinders.

2. Perform the following steps in order to test the operating speed of the stick cylinder.



c. Position the upper surface of the boom parallel to the ground.

d. Fully extend the bucket cylinder.

e. Retract the stick cylinder. With a stopwatch, measure the time that is required to fully

extend the stick cylinder.

f. Extend the stick cylinder. With a stopwatch, measure the time that is required to fully


(A) Extension test

(B) Retraction test


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retract the stick cylinder.

g. Refer to the specifications in Table 1 for the operating speed of the stick cylinder.

3. Perform the following steps in order to test the operating speed of the bucket cylinder.



c. Position the upper surface of the boom parallel to the ground.

d. Position the stick so that the stick is perpendicular to the ground.

e. Fully retract the bucket cylinder.

f. With a stopwatch, measure the time that is required to fully extend the bucket cylinder.

g. Position the bucket cylinder at full extension. With a stopwatch, measure the time that isrequired to fully retract the bucket cylinder.

h. Refer to the specifications in Table 1 for the operating speed of the bucket cylinder.


(A) Extension test

(B) Retraction test

Table 1

Cylinder Operating Speed (seconds)


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Item New Rebuild

BoomExtension 3.4 0.5 4.0 (1)

Retraction 2.6 0.5 3.3 (1)

Stick

Extension 3.4 0.5 4.0 (1)

Retraction 2.8 0.5 3.5 (1)

BucketExtension 4.4 0.5 5.0 (1)

Retraction 2.5 0.5 3.2 (1)

( 1 ) Maximum

Copyright 1993 - 2006 Caterpillar Inc.

Todos los derechos reservados.Red privada para licenciados del SIS.

Wed Jul 26 10:43:30 EST 2006


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Relief Valve (Pilot) - Test and Adjust

SMCS -5072-036

1. Place the machine on level ground.

2. Stop the engine.

3. Release the pressure in the hydraulic system. Refer to Testing and Adjusting, "HydraulicSystem Pressure - Release".

4. Connect a 6000 kPa (870 psi) pressure gauge to pressure tap (30) .

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Pilot oil manifold compartment

(28) Locknut

(29) Setscrew

(30) Pressure tap

(31) Pilot filter


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6. Place the machine controls at the following settings: engine speed dial "10" and AEC switchOFF. Refer to Testing and Adjusting, "Engine Performance - Test" for engine rpm settings.


8. Check the pilot relief valve setting at pressure tap (30) .

9. The pilot relief valve setting should be 4100 200 kPa (595 29 psi). If the pilot relief valvesetting is not within the specification, adjust the pilot relief valve.

10. In order to adjust the pilot relief valve, loosen locknut (28) .

11. Turn setscrew (29) until the pressure gauge reading at pressure tap (30) is 4100 200 kPa(595 29 psi).

Note: Turning setscrew (29) clockwise increases the pressure. Turning setscrew (29)counterclockwise decreases the pressure.

Note: Always make final pressure adjustments on pressure rise.

12. Tighten locknut (28) to a torque of 49 4.9 Nm (36 4 lb ft).

Note:Normal operation of the engine and pumps are necessary for the pressure adjustment. If theresults of the pressure adjustments are not correct, then the engine and the pump characteristic curveneeds to be checked.


Wed Jul 26 10:44:30 EST 2006


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Accumulator (Pilot) - Test and Charge

SMCS -5077-045-PS ; 5077-081-PS ; 5077-081-PX

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i01927888

Dry nitrogen is the only gas approved for use in the accumulators. Thecharging of oxygen gas in an accumulator will cause an explosion. Anexplosion can be eliminated by using nitrogen gas cylinders withstandard CGA (Compressed Gas Association, Inc.) No. 580 connectors.When nitrogen gas is ordered, make sure to order the cylinders withCGA No. 580 connectors.

Do not rely on color codes or other methods of identification to tell thedifference between nitrogen and oxygen cylinders. In any application,never use an adapter to connect your nitrogen charging group to a valveoutlet used on both nitrogen, oxygen, or other gas cylinders. BE SUREYOU USE DRY NITROGEN (99.8% purity).

NOTICE





Table 1


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Testing and Charging the Pilot System Accumulators

Stop the engine. Release the pressure from the pilot hydraulic system. Refer to Testing andAdjusting, "Hydraulic System Pressure - Release".

Gas pressure is variable with temperature. Check the temperature of the air around the accumulator.In order to check the amount of charge in an accumulator, the accumulator must be at the sametemperature as the surrounding air.

Note: The temperature of the accumulator may change as the accumulator is being charged due to

the expansion or compression of the nitrogen charge. It may be necessary to charge the accumulatorin several steps in order to ensure a correct charge.

REQUIRED TOOLS

Part Number Description Quantity

175-5507 Nitrogen Charging Group 1

Table 2

Charge Pressures and Temperatures

Temperature Pressure

-25C (-13F) 1490 kPa (216 psi)

-20C (-4F) 1520 kPa (220 psi)

-15C (5F) 1550 kPa (225 psi)

-10C (14F) 1580 kPa (229 psi)

-5C (23F) 1610 kPa (233 psi)

0C (32F) 1640 kPa (238 psi)

5C (41F) 1670 kPa (242 psi)

10C (50F) 1700 kPa (247 psi)

15C (59F) 1730 kPa (251 psi)

20C (68F) 1760 kPa (255 psi)


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If an accumulator has less than half of the required amount of precharge pressure, the accumulatorshould be charged. Oil in the accumulator will give an inaccurate precharge reading.

25C (77F) 1790 kPa (260 psi)

30C (86F) 1820 kPa (264 psi)

35C (95F) 1850 kPa (268 psi)

40C (104F) 1880 kPa (273 psi)

45C (113F) 1910 kPa (277 psi)

50C (122F) 1940 kPa (281 psi)


Accumulator (Typical Example)

(1) Cap


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1. Make sure that valve (5) is closed.

2. Remove cap (1) from the accumulator.

3. Rotate valve handle (8) on chuck (9) counterclockwise until the valve handle reaches the fullout position. Install chuck (9) on the accumulator.

4. Turn valve handle (8) clockwise until the valve is completely open.

5. Check the pressure reading on pressure gauge (6). Refer to Table 2 for the correct chargingpressure and temperature relationship for the accumulator.

6. If the pressure reading on the gauge is too high, use the following steps in order to purge the

nitrogen from the accumulator.

a. Slowly open valve (5) .


175-5507 Nitrogen Charging Group

(2) Pressure gauge

(3) Connection to the nitrogen cylinder

(4) Regulator

(5) Valve

(6) Pressure gauge

(7) Pressure regulating screw

(8) Valve handle

(9) Chuck


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b. Purge the nitrogen pressure until the pressure reading is within the specification.

c. Close valve (5) .

d. Turn valve handle (8) on chuck (9) counterclockwise until the valve is completelyclosed.

e. Remove the test equipment. Replace cap (1) .

7. If the pressure is too low, use the following procedure to charge the accumulator:

a. Turn valve handle (8) on chuck (9) counterclockwise until the valve is completelyclosed.

b. Connect the 175-5507Nitrogen Charging Group to the nitrogen cylinder withconnection (3) .

c. Connect the other end of the hose to valve (5) .

d. Open the valve on the nitrogen cylinder. Make an adjustment to screw (7) on theregulator assembly until gauge (2) indicates the proper precharge pressure for theaccumulator. Refer to Table 2.

e. Open valve (5). Loosen chuck (9) slightly. Allow the nitrogen to purge the air from thehose. Tighten chuck (9) .

f. Open valve (8) in order to charge the accumulator.

g. Close valve (5) .

h. The accumulator has the correct charge if the pressure on gauge (6) and the pressure ongauge (2) are equal and the gauge readings do not change. If there is a decrease in

pressure on gauge (6), open valve (5) and allow more nitrogen to go into theaccumulator.

i. Repeat steps 7.d through 7.g until the following items occur:

The pressure on gauge (6) is equal to the pressure on gauge (2) .

There is no pressure change when valve (5) is closed.

j. Close valve (5). Close the valve on the nitrogen cylinder.

k. Turn valve handle (8) on chuck (9) counterclockwise until the valve is completelyclosed.

l. Remove the test equipment. Replace cap (1) .


Wed Jul 26 10:45:59 EST 2006


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Relief Valve (Main) - Test and Adjust

SMCS -5069-025; 5069-081

1. Position the machine on level ground and stop the engine.


3. Attach a 60000 kPa (8700 psi) pressure gauge to pressure tap (1) .


5. Place the machine controls at the following settings: engine speed dial "10" and AEC switch

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Pump compartment

(1) Pressure tap (idler pump delivery pressure)

(2) Pressure tap (drive pump delivery pressure)

(3) Pressure tap (power shift pressure)


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OFF. Refer to Testing and Adjusting, "Engine Performance - Test (Engine Speed)" for enginerpm settings.


7. Open the bucket until the bucket cylinder rod is at the full retraction.

8. Check the main relief valve pressure setting at pressure tap (1) .

9. Return the joystick for the bucket to the NEUTRAL position.

10. The main relief valve pressure setting should be 34300 490 kPa (4950 72 psi). If the mainrelief valve pressure setting is not within the specification, adjust the main relief valve

pressure setting.

11. In order to adjust the main relief valve, loosen locknut (5) and turn adjustment screw (4) untilthe pressure gauge reading at pressure tap (1) is 34300 490 kPa (4950 72 psi).

Note: Turning adjustment screw (4) clockwise increases the pressure. Turning adjustmentscrew (4) counterclockwise decreases the pressure.


12. Tighten locknut (5) to a torque of 50 10 Nm (37 7 lb ft).

Temporary Setting of the Main Relief Valve

Note: A temporary setting of the main relief valve is required before any line relief valve can beadjusted.


(4) Adjustment screw

(5) Locknut

(6) Main relief valve


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1. The main relief valve pressure setting should be 34300 490 kPa (4950 72 psi). If the mainrelief valve is not within the specification, adjust the main relief valve pressure setting to thecorrect pressure specification before performing Step 2. Refer to Testing and Adjusting,"Relief Valve (Main) - Test and Adjust".

2. Loosen locknut (5) and turn adjustment screw (4) clockwise for one half turn. Tighten locknut

(5) to the specified torque.




(5) Locknut

(6) Main relief valve


Wed Jul 26 10:47:05 EST 2006


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Relief Valve (Line) - Test and Adjust

SMCS -5117-025-L9 ; 5117-081-L9

Note: A temporary setting of the main relief valve pressure is required before any line relief valvepressure setting is adjusted. Refer to the adjustment procedures in Testing and Adjusting, "ReliefValve (Main) - Test and Adjust".

Test


2. Stop the engine.


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i01922539

Table 1

Required Tools


8T-0861Pressure Gauge (

60000 kPa (8700 psi))2

8T-0856Pressure Gauge (

6000 kPa (870 psi))1


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Monitor

(A) Message display

(B) Keypad

(C) Up key

(D) Left key

(E) Down key

(F) Right key

(G) Cancel key

(H) Set key


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10. Start Service Mode and input a fixed power shift pressure of 2600 kPa (375 psi).

a. Press menu key (J) .

Note: If more than thirty seconds pass between pushing the keys on the keypad, themenu mode will be cancelled and the previous display will be restored to messagedisplay (A) .

b. Press down key (E) in order to highlight the menu item "SERVICE OPTIONS" on themessage display. Press OK key (I) .

c. Input the password "FFF2". Press left key (D) or right key (F) in order to change theposition of the flashing character. Press up key (C) or press down key (E) in order to

change the value of the flashing character. Press OK key (I) after the correct password isdisplayed.

d. Press down key (E) once in order to highlight the second line on the message display.

e. Press right key (F) repeatedly until "DEVICE TEST" appears on the message display.

f. Press down key (E) in order to move down one line on the message display.

g. Press right key (F) until the "PS PRV - FIXED" appears on the message display.

h. Press down key (E) .

i. Press OK key (I). The display on line 4 of the message display will now change to anumeric value. These characters represent the power shift pressure (kPa).

j. Press left key (D) or right key (F) in order to increase or decrease the numeric value thatis displayed on line 4 of the message display. Pressing left key (D) decreases the powershift pressure. Pressing right key (F) increases the power shift pressure.

Note: The value for power shift pressure on the monitor may not always match thepressure reading on the pressure gauge. Adjust the value on the monitor until the desired

power shift pressure is attained on the pressure gauge that is connected to the pressuretap for power shift pressure. The actual power shift pressure must be 2600 kPa (375 psi)on the pressure gauge.

Note: To prevent a change in power shift pressure during the relief valve adjustment, donot turn the engine start switch to the OFF position.

Note: Refer to Service Manual, "Engine and Pump Electronic Control System" foradditional information on Service Mode.

11. The pressure setting for both the head end and the rod end for each cylinder is 36800 1500

kPa (5340 220 psi).

(I) OK key

(J) Menu key


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The following line relief valves are located on top of the main control valves: boom cylinder rod end,bucket cylinder head end and stick cylinder head end. The line relief valve for the bucket cylinderrod end is located under the main control valves and opposite the line relief valve for bucket cylinderhead end (8).

The line relief valve (boom cylinder head end) (11) is located on boom drift reduction valve (10).


Main control valves (front view)

(7) Line relief valve (boom cylinder rod end)

(8) Line relief valve (bucket cylinder head end)

(9) Line relief valve (stick cylinder head end)


Main control valve (bottom view)

(10) Boom drift reduction valve

(11) Line relief valve (boom cylinder head end)


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The line relief valve (stick cylinder head end) (12) is located on stick drift reduction valve (13).

Note: Turn adjustment screw (15) clockwise in order to increase the pressure. Turn adjustmentscrew (15) counterclockwise in order to decrease the pressure.

Note: After relief valve adjustments, cancel Service Mode.


Main control valve (bottom view)

(12) Line relief valve (stick cylinder rod end)

(13) Stick drift reduction valve


Line relief valve (typical example)

(14) Locknut



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Note: Return the main relief valve pressure to the specified setting after testing and adjusting anyline relief valve. Refer to Testing and Adjusting, "Relief Valve (Main) - Test and Adjust" for themain relief valve pressure setting.

Adjustment (Boom Cylinders)

1. To adjust the line relief valve pressure setting of the boom cylinder head end, move thejoystick for the boom until the boom is at the full BOOM RAISE position (full extension ofboom cylinders). Hold the joystick for the boom in this position.

2. Check the pressure in the boom cylinder head end on the pressure gauge at pressure tap (1) .

3. Return the joystick for the boom to the NEUTRAL position.

4. The pressure gauge reading should be 36800 1500 kPa (5340 220 psi). If the pressuregauge reading at pressure tap (1) is not within the specification, adjust line relief valve (11) .

5. In order to adjust line relief valve (11), loosen locknut (14) on the boom line relief valve. Turnadjustment screw (15) until the pressure gauge reading at pressure tap (1) is 36800 1500 kPa(5340 220 psi).

Note: Always make final pressure adjustment on pressure rise.

6. Tighten locknut (14) on relief valve (11) .

Note: In order to adjust the line relief valve pressure setting for the boom cylinder rod end, atemporary adjustment of the line relief valve for the bucket cylinder rod end must be

performed.

7. Loosen locknut (14) on the line relief valve for the BUCKET OPEN function. Turn adjustmentscrew (15) by one half turn in a clockwise direction. Tighten locknut (14) on the line reliefvalve for the bucket cylinder.

8. Move the joystick for the bucket until the bucket is at the full BUCKET OPEN position (fullretraction of the bucket cylinder). Hold the joystick for the bucket in this position. At the sametime, move the joystick for the boom until the boom is at the full BOOM DOWN position (fullretraction of boom cylinders). Hold the joystick for the boom in this position.

9. Check the pressure in the boom cylinder rod end on the pressure gauge at pressure tap (1) .

10. Return the joystick for the boom to the NEUTRAL position.


12. In order to adjust line relief valve (7), loosen locknut (14) on the boom line relief valve. Turnadjustment screw (15) until the pressure gauge reading at pressure tap (1) is 36800 1500 kPa(5340 220 psi).


13. Tighten locknut (14) on the boom line relief valve.


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14. After completion of line relief valve adjustment for the boom cylinders, return the line reliefvalve pressure setting of the bucket to the specified pressure setting.

Note: If an appropriate location is not available to fully extend the boom cylinders, exchange thefunctions of the boom line relief valves. Remove the line relief valve for the boom cylinder head endand the line relief valve for the boom cylinder rod end from the main control valve. Exchange thelocation of the line relief valves. Adjust the pressure of the boom line relief valve that is nowattached in the head end. After completion of line relief valve adjustment, return the respective linerelief valves to the original locations.

Adjustment (Stick Cylinder)

1. To adjust the line relief valve pressure setting of the stick cylinder rod end, move the joystickfor the stick until the stick is at the full STICK OUT position (full retraction of stick cylinder).Hold the joystick for the stick in this position.

2. Check the pressure in the stick cylinder rod end on the pressure gauge at pressure tap (2) .

3. Return the joystick for the stick to the NEUTRAL position.


5. In order to adjust line relief valve (12), loosen locknut (14) on the stick line relief valve. Turnadjustment screw (15) until the pressure gauge reading at pressure tap (2) is 36800 1500 kPa(5340 220 psi).



7. To adjust the line relief valve pressure setting of the stick cylinder head end, move the joystickfor the stick until the stick is at the full STICK IN position (full extension of stick cylinder).Hold the joystick for the stick in this position.

8. Check the pressure in the stick cylinder head end on the pressure gauge at pressure tap (2) .

9. Return the joystick for the stick to the NEUTRAL position.


11. In order to adjust line relief valve (9), loosen locknut (14) on the stick line relief valve. Turnadjustment screw (15) until the pressure gauge reading at pressure tap (2) is 36800 1500 kPa(5340 220 psi).


12. After completion of line relief valve adjustment, tighten locknut (14) .

Adjustment (Bucket Cylinder)


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1. To adjust the line relief valve pressure setting of the bucket cylinder head end, move thejoystick for the bucket until the bucket is at the full BUCKET CLOSE position (full extensionof bucket cylinder). Hold the joystick for the bucket in this position.

2. Check the pressure in the bucket cylinder head end on the pressure gauge at pressure tap (1) .



5. In order to adjust line relief valve (8), loosen locknut (14) on the bucket line relief valve. Turnadjustment screw (15) until the pressure gauge reading at pressure tap (1) is 36800 1500 kPa(5340 220 psi).



7. To adjust the line relief valve pressure setting of the bucket cylinder rod end, move thejoystick for the bucket until the bucket is at the full BUCKET OPEN position (full retractionof bucket cylinder). Hold the joystick for the bucket in this position.

8. Check the pressure in the bucket cylinder rod end on the pressure gauge at pressure tap (1) .


10. The pressure gauge reading should be 36800 1500 kPa (5340 220 psi). If the pressure

gauge reading at pressure tap (1) is not within the specification, adjust the line relief valve forthe bucket cylinder rod end.

11. In order to adjust the line relief valve, loosen locknut (14) on the bucket line relief valve. Turnadjustment screw (15) until the pressure gauge reading at pressure tap (1) is 36800 1500 kPa(5340 220 psi).


12. After completion of line relief valve adjustment, tighten locknut (14) .


Wed Jul 26 10:48:32 EST 2006


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Swing Motor - Test - Measurement of Case Drain Oil

SMCS -5058-081-ZW

1. Stop the engine.

2. Release the pressure in the hydraulic system. Refer to Testing and Adjusting, "Hydraulic

System Pressure - Release".

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i01627730

Table 1

Required Tools


6V-9830 Cap 1

Wrench24 mm (0.94 inch)

1

Container for Measuring 1

NOTICE





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3. Disconnect the case drain hose (1) from tee (2). Place the open end of the case drain hose (1)into the container for measuring.

4. Install 6V-8398O-Ring Seal and 6V-9830Cap on tee (2) of the swivel.

5. Disconnect connector (3) from solenoid valve (4) for the swing parking brake.



Swing motor compartment

(1) Case drain hose

(2) Tee


Pilot manifold

(3) Connector

(4) Solenoid valve for swing parking brake


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7. Place the engine speed dial at position "10" and AEC switch OFF. Maintain the maximum no-load speed at 1880 50 rpm.

Reference: Refer to Testing and Adjusting, "Engine Performance - Test" for engine rpmsettings.


9. Slowly move the swing joystick and make sure that the swing parking brake is activated.

10. Move the swing joystick fully for one minute. Measure the case drain oil.

11. Stop the engine.

12. Connect connector (3) to the solenoid valve for swing parking brake (4) .

13. Repeat this test procedure three times in order to obtain three measurements. For each test

procedure, swing the upper structure to a different position.

The following values specify the maximum acceptable flow of case drain oil when the swing reliefpressure is set at 27900 980 kPa (4050 140 psi).

New swing motor ... 30 L/min (7.9 US gpm)Rebuilt swing motor ... 35 L/min (9.2 US gpm)

Copyright 1993 - 2006 Caterpillar Inc.Todos los derechos reservados.

Red privada para licenciados del SIS.

Wed Jul 26 10:49:26 EST 2006


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Relief Valve (Swing) - Test and Adjust

SMCS -5454-036


2. Stop the engine.


4. Connect a 60000 kPa (8700 psi) pressure gauge to pressure tap (2) .

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i01861380


Pump compartment

(1) Pressure tap (idler pump delivery pressure)

(2) Pressure tap (drive pump delivery pressure)

(3) Pressure tap (power shift pressure)


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5. Disconnect connector (26) from swing parking brake solenoid valve (27) .


7. Place the machine controls at the following settings: engine speed dial "10" and AEC switchOFF.

Reference: Refer to Testing and Adjusting, "Engine Performance - Test (Engine Speed)" forengine rpm settings.

8. Move the swing joystick slowly and ensure that the swing parking brake is operating properly.


Pilot oil manifold

(26) Connector

(27) Swing parking brake solenoid valve


Swing motor



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21. Connect connector (26) to the solenoid valve for swing parking brake (27) .


Wed Jul 26 10:50:48 EST 2006


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Swing Bearing Movement - Measure

SMCS -7063-082

Use the procedures that follow in order to check the vertical movement and the circular movement ofthe swing bearing. Two dial indicators with magnetic bases are required for the procedures.

Procedure To Measure Vertical Movement Of The SwingBearing



3. Position the upper structure parallel with the tracks.

4. Inspect the static torque of the bolts in the swing bearing in order to make sure that the boltsare tightened properly.

a. Set the torque wrench to a torque value of 800 Nm (590 lb ft).

b. Make a mark on the head of the bolt that is relative to the carbody or the bearing race.

c. Apply the specified torque to the bolt.

d. If the head of the bolt does not move, the torque is within the specification.

e. If the head of the bolt moves, replace the bolt.

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5. Refer to Illustration 1. Position dial indicator (A) between the carbody and the outer race ofthe swing bearing (C). Position dial indicator (B) between the carbody and the outer race ofthe swing bearing (C) .

Note: Position the dial indicators at the front center of the carbody and at the rear center of thecarbody.


(A) Dial indicator

(B) Dial indicator

(C) Outer race of the swing bearing

(D) Inner race of the swing bearing

(F) Carbody


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6. Refer to Illustration 2 and move the boom, the stick, and the bucket into the position that isshown.

7. Adjust both dial indicators to "zero".

8. Refer to Illustration 3 for the correct position of the boom, of the stick, and of the bucket.Lower the boom until the front of the machine rises from the ground. The angle between theground and the track should be approximately 15 degrees.




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9. Record the dial indicator readings.

10. If the difference between the readings before testing and after testing at the zero position thatis shown in Illustration 2 is greater than 0.05 mm (0.002 inch), additional measurements arenecessary. Repeat Step 6 through 9.

11. Remove the dial indicators. Rotate the upper structure three times in a clockwise direction.Rotate the upper structure three times in a counterclockwise direction.

12. Repeat Step 5 through 11 three times. Determine the average value of the three readings.Reference Table 1 for the service limit specifications.

Procedure To Measure Circular Movement Of The SwingBearing



Table 1

Specifications For Vertical Movement

New Service Limit

1.5 mm (0.06 inch) 3.0 mm (0.2 inch)


(E) 1000 mm (39.4 inch)


73/142

3. Position the upper structure parallel to the tracks. Refer to Illustration 4 for the correct positionof the boom, of the stick, and of the bucket.

4. Stop the engine.

5. Position dial indicator (A) on the outer race of swing bearing (C). Position a magnet (F) on theinner race of swing bearing (D). The value for the measurement will be the average of fourreadings.

6. By hand, push the side of the bucket in order to rotate the upper structure in acounterclockwise direction as far as possible. Hold the upper structure in that position whilethe dial indicator is set to "zero".

7. By hand, push the side of the bucket in order to rotate the upper structure in a clockwisedirection as far as possible. Record the dial indicator reading.

8. Remove the dial indicator. Rotate the upper structure three times in a clockwise direction.Rotate the upper structure three times in a counterclockwise direction.

9. Perform Step 5 through 8 for each machine position that is shown in Illustration 6. The

evaluation of the movement of the bearing is based on the average value of the fourmeasurements at the four positions that are shown in 6.

If the measurements for the circular movement of the swing bearing exceed the specifications that


(A) Dial indicator

(C) Outer race of swing bearing

(D) Inner race of swing bearing

(F) Magnet


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are listed in Table 2, check the following components for improper function, wear and/or failure:

swing gear teeth

pinion gear in the swing drive

swing drive

swing motor

swing brake valve

swing control valve

Table 2

specifications for Circular Movement

New Service Limit

4.5 mm (0.18 inch) 13.5 mm (0.53 inch)

Illustration 6 g


Wed Jul 26 10:52:16 EST 2006


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Fan Motor (Hydraulic Oil Cooler) - Test - Measurement ofCase Drain Oil

SMCS -5058-081-FM

Note: The fan motor speed must be set to the correct specification before performing this test. Referto Testing and Adjusting, "Fan Motor Speed (Hydraulic Oil Cooler) - Test and Adjust".


2. Stop the engine.

Cerrar SIS

Pantalla anterior

Producto: EXCAVATORModelo: 330C L EXCAVATOR CYA

Configuracin: 330C L Excavator CYA00001-UP (MACHINE) POWERED BYC-9 Engine


i01627464

Table 1

Required Tools


6V-9829 Cap As 1

Container for measuring 1

NOTICE




Pgina 1 de 3330C L Excavator CYA00001-UP (MACHINE) POWERED BY C-9 Engine(SEBP...

24/07/2006https://sis.cat.com/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/s...


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4. Disconnect case drain hose (2) from case drain filter (3). Install 6V-9829Cap As on the openfitting of case drain filter (3) .

5. Place the end of drain hose (2) into the container in order to measure the case drain oil.


7. Place the machine controls at the following settings: AEC switch OFF and engine speed dial"10".


(1) Fan motor

(2) Case drain hose


(2) Case drain hose

(3) Case drain filter




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Reference: Refer to Testing And Adjusting, "Engine Performance - Test" for engine rpmsettings.

8. Measure the amount of case drain oil for one minute.

Table 2

Case Drain Oil

Fan Speed Amount of Case Drain Oil

1200 rpm (1)1.1 L/min (0.29 US gpm)

1340 rpm (2)1.3 L/min (0.34 US gpm)

( 1 ) Standard specification

( 2 ) High ambient specification


Mon Jul 24 10:04:30 EST 2006




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Fan Motor Speed (Hydraulic Oil Cooler) - Test and Adjust

SMCS -5058-036-FM

Cerrar SIS

Pantalla anterior

Producto: EXCAVATORModelo: 330C L EXCAVATOR CYA

Configuracin: 330C L Excavator CYA00001-UP (MACHINE) POWERED BYC-9 Engine


i01861575

Table 1

Required Tools


9U-7400 Multitach Tool Group 1


Engine compartment (rear)

(2) Delivery line

(3) Line to relief valve (fan pump)

(33) Fan pump

NOTICE




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Test


2. Stop the engine.

3. Release the pressure in the hydraulic system. Refer to Testing And Adjusting, "HydraulicSystem Pressure - Release".

4. Install 9U-7400Multitach Tool Group on the fan for the hydraulic oil cooler.


6. Place the machine controls at the following settings: AEC switch OFF and engine speed dial

"10".

Reference: Refer to Testing And Adjusting, "Engine Performance - Test" for engine rpmsettings.


8. Read the fan speed. Refer to Table 2 for the correct speed.

9. If the fan speed is not within the specification, adjust the relief valve for the fan pump.

Adjust




Table 2

Fan Speed

1200 10 rpm (1)

1340 10 rpm (2)






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1. In order to adjust the relief valve pressure setting for the fan pump, loosen locknut (36) andturn adjustment screw (37) .

Note: Turn adjustment screw (37) clockwise in order to increase the pressure. Turn adjustmentscrew (37) counterclockwise in order to decrease the pressure.

Note: A quarter turn of the relief valve changes the pressure approximately 3300 kPa (480psi).


2. Adjust the relief valve pressure to the specifications in Table 3.

Note: In order to avoid hydraulic component damage, adjust the fan speed within the

specifications in Table 3.


Pump compartment

(34) Pressure tap

(35) Relief valve (fan pump)

(36) Locknut


Table 3

Fan Speed Relief Valve Pressure

1200 10 rpm (1)8800 kPa (1275 psi)

1340 10 rpm (2)11100 kPa (1610 psi)






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3. Tighten locknut (36) to a torque of 10 1 Nm (7 0.5 lb ft).


Mon Jul 24 10:15:45 EST 2006




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Travel Motor - Test - Measurement of Case Drain Oil

SMCS -4351-081

Cerrar SIS

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Producto: NO S

testing adjusting hydraulic 330c

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